Overview
What It Does
Sendmux Mailbox Agent packages a focused communication workflow for an AI agent. Work efficiently with one Sendmux mailbox from an AI agent. Use for reading, searching, counting, syncing, triaging, filing, deleting, threading, or replying from a mailbox with an smx_mbx_ key or scoped smx_agent_ token, especially when the user asks an agent to inspect an inbox, find relevant messages, mark messages, or continue from a prior mailbox sync state. It is best suited to users who can review the resulting actions and provide only the accounts, files, or command access needed for the task. It is not a substitute for human approval on destructive, financial, security-sensitive, or public-facing actions.
Task ideas
Popular Use Cases
- Draft and organize messages
- Work with communication channels and contacts
- Summarize conversations into next steps
- Automate routine coordination
Installation
Install this Agent Skill
Claude Code
npx skills add https://github.com/Sendmux/skills --skill sendmux-mailbox-agentCommands derived from the public GitHub SKILL.md record. Checked 2026-09-02. Review the source before running them.
Before you start
Requirements
| Claude Code | Required / review |
| Codex | Required / review |
| Public SKILL.md source | Required / review |
| Review instructions and requested permissions before installation | Required / review |
| Paid service | Check source |
| Supported system | Check source |
Popularity context
Why It’s Popular
Sendmux Mailbox Agent is a verified Agent Skill from Sendmux with a public SKILL.md, compatible with Claude Code, Codex.
Alternatives
